Flowtown's NetProspex Social 50 ranks companies according to how social their employees are

What a great infographic by Flowtown! The NetProspex Social 50 score below takes a look at the social network usage of employees and ranks the top 50 organisations according to overall activity, the score is based on average number of friends or connections and average number of tweets and followers. 

The below is already amazing and some of the company names in the list are quite surprising but I'm wondering how this compares to the degree of innovation in these companies? Is there maybe a correlation between social network activity and innovation or at least learning? I personally get a lot of ideas from links and content shared on my social networks and I'm wondering how that would impact larger organisations.

Which Companies Are the Most Social?
Flowtown - Social Media Marketing Application

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